Insert earphone ER-1 from Etymotic Research

Insertphones ER-1 from Etymotic Research.
The ER-1 is designed to mimic the normal resonance of the open ear and is used for speech audiometry, where the aim is to reproduce the same frequency response at the eardrum for speech as is produced in a live situation.

The system includes: Headphones, dual mono 7" cable arrangement, 50 earplugs (normal, 13mm), 10 earplugs (baby, 10mm), 2 adapters Eartips™ with tubes, 4 replacement soundtubes, Velcro fasteners
Characteristics:
- Flat frequency response related to the sound field
- 70+ dB Isolation between ears: reduces the need for masking.
- 30+ dB external noise reduction
- Eliminated measurement problems Problems due to collapsed auditory canals
- Sensitivity: (@1 kHz) SPL at 0.1v 100 dB SPL for 1V rms drive
- Impedance: (@1kHz) 10 Ohms nominal

Scope of delivery; 1 piece
evidENT-Shop Article 731